If there was a separate subforum for debates, that would be no problem, even if we moderated at the Tavern standard (so to speak), because those reports would be identifiable as coming from a debate thread. But reports are simply entitled 'Off Topic - The Tavern: Reported Post by <name of reporter>'. If close moderator attention to these reports or threads is demanded, that requires much closer moderator attention to the Tavern as a whole. And the staff decision was not to have a separate subforum (and certainly wasn't to give the Tavern as a whole closer attention).
And again, "don't expect" and "I wouldn't count on it" don't mean that mods will flatly refuse to deal with any out of place posts that they think constitute jerkish behaviour, it just means that attention is far less likely to be given (to the extent that it shouldn't be expected, counted on or eagerly anticipated), and when it is, it needs to be consistent with the lack of attention we give to everything else in the Tavern. I certainly wouldn't want to induce reliance by saying that we'll deal with something we may or may not get around to ever dealing with.